Variable-speed transmission mechanism for air compressors



Feb. 20, 1923. 1,446,284.

llllllllll/JIM v JNVENTQR.

ATTORNEY.

Feb. 20, 1923.

R. .En BADSKY. VARIABLE SPEED TRANSMISSION MECHANISIVI FOR AIRCOMPRESSORS.

2 SHEETS-SHEET 2.

'FILED FEB.19.1`921.

AT YORNE Y.

Patented eb. Eil, i923.

RAYMOND E.

VARIABLE-SEEE TRJJTS SSION I inem BADSKY, 03T VICHITA, KANSAS.

ECHANISIi-T FOR AIB CQMPRESSORS.

.application inea. remuer-y ie, i921. semi no, 446,281.

To a-Z foi/om t may coa-cera.' i

Be it known that l, RAYMOND E. Bansin?, a citizen oft the United States,residing at lVichita, in the county of Sedgwick vand State of Kansas,have invented certain new and uset'ul improvements in Variable-Speed.lransmie ion Mechanisms ttor Air Compres sorsj ot which the followingis a specification, reference being had to the accompanying drawings.

This invention relates to means for trans- 4initting power, andparticularly to means whereby the variable speedot driven and drivingmembers may be changedT that is whereby the speed of a driven member maybe varied.

The general object et' the invention is to provide a mechanism oit' thiskind which is particularly applicable for use in air compressingmachinery. y

A further object is to provide in a mechanism of this character arotatable member having upon its face a series oftoothed annuliconcentric to the center of rotation of the member7 and provide a shatthaving a gear wheel thereonadapted to engage with any one ot saidannuli, and provide means whereby the gear wheeliand the shaft uponwhich it is mounted may be shifted out of engagement with any oneannulus and the gear wheel shifted longitudinally along its sha-tt andthen shifted into engagement with any other annulus to thus securediiilercnt driving ratio.

And a further object is to provide means wherebyY the. gear wheel may beshifted out oi: engagement with the rotatable member carrying the gearteeth so as to prevent the transmission ot power to the compression pumpor other mechanism.

Other objects will appear in the course of the following description.

My invention is illustrated in the pany/ing drawings7 wherein Figure 1is a side elevation ot a power transmission mechanism constructed in nocordance with my invention. g.

igure 2 is a face view of the gear wheel 11; Figure 3 is a diametricalsection thereof; Figure 4 is a tace view of the gear wheel 21, the shaft14 being in section;

Figure 5 is a cross section thereof; Figure 6 is a sectional view of theupper bearing 17 5 Figure r is a vertical sectional view through thelower bearing;

Figure 8 is aplan view orP the end of the l lever 22 Figure 9 is asectional view of `the bearing for the lower end of the shaft 14 showingthe position ot this shaft in the bearing` when the shaft is tilted.

Referringto these drawings, 10 designates a driving shaft intended to bedriven liiirom anengine in any suitablemanner and carrying lupon it thedish 11. This disk is provided with a plurality ot bevel faced toothedannuli 12 constituting a series of gear wheels. Mounted upon the shaft10 for sliding movement with relation thereto toward or from the dish 11is a slide 13 which forms a. `step bearing for a shaft 14. The oppositeend ot this shaft is formed with a globular head 15 which'has thus auniversal `joint connection in a. ysocket `16 `formed in a supportingbracket 4or like member 17. Mounted upon the shaft 14 is .a bevelledgear wheel .18 and passing through `the bracket y17 is a driven `shaft19 .having thereon a hevelled gear wheel 20 engageable with the bevelledgear wheel 18.

Also carried upon the shaft 14 is a longitudinally shiftable bevelledgear wheel 21 which is adaptedL to mesh with any vone of the bevelledtoothed annuli 12. This gear wheel 21 is splined upon the shaft 14 butis longitudinally shiftable therealong by any suitable gear shiftingmechanism. l have illustrated for this purpose lever 22 which embracesan annularly groowed` collar or hub 28 termed on the gear wheel 21, thislever being angular in form, and the other end of the lever passing overan arcuate rack 24, the lever being provided with` means whereby it maybe loclred in any desired position on the sector 24. This lever isillustrated as beine1 pivotally mounted upon a bracket 25 extending'from boxing 26 through which they driving shat't 10 passes.

Pivbtally connected to the sliding bearing and ulcruined at 27 is alever 28e the outer end of whic i extends over an arcuate rack 29. thislever having means whereby it may be locked to the rack at any desiredadjusted position.

ln the operation of this mechanism, when it is desired to change thespeed of the shaft 19 relative to the shaft 10, the lever 28 is shifted'to shift the sliding bearing 13 away gagged.

from the dislr 11, thus eerrying the gear Y to my desired positionalong; the shaft 141 and then the slide 13 is shifted again toward thedisk 11, carrying' the gem' wheel 21 into engagement with the pivotedannulus. l. have illustrated eight annuli on the disk 11 and, therefore,it will be seen that eight different speeds iney be secured for thedriving shaft by shifting' the gearwhee'l 21 into engagement with anyone of the annuli. kIf it be desired to disconnect the `shaft 19entirely from the driving' means, then' tlie lever 28 is operated toshift the slide 13 away freni the disk 11 and is held. in this positionso that the gear teothed'ziimuli 12 and the gearwheel 21 are out ofengagement,

l have partfeularly desigiiedthis device for use for transmitting;`power 'from my suitable motor or engine to air compressing apparatus,but `1 do not ,wish to he limited thereto, as it is 'obvious that themechanism might be applied in a large number of different Circumstancesfor the transmission of power. I have illustrated the gea-r wheel 20 asbeing; provided with a wrist pin 30 eonstituting a crank whereby an airpumpy may be driven and the size 4of the gear wheel and the length efstroke, of course, will depend upon the purpose of the transmissionmechanism. Wvhere the mechanism is to be used for pumping' air for powerpurposes, the meelianism would be built and geared finesse to furnishsufficient air pressure when the `gear wheel 21 was engaged with any oneof the annuli Close to the shaft 10. 1f at any time there was too muchpressure, the air pump could be made idle by simply diseonnestingthegear 21 entirely from the teeth on the disk 11. The higher gears onthe disk 11 would be used in an emergency. As before stated, I do notwish to limit myself however, to the use of this device withl an airpump, though have designed it for this purpose.

1 claim l A powertransmission mechanism of the Character deseribedIcomprising; a. driving' shaft and a driven shaft, a disk upon thedriving); shaft having` a plurelity of toothed anniili, bearings foreaeh of said shafts reeeiving" the `shafts intermediate the endsthereof, the bearing?,` of the driving shaft being; shiftable toward andsway from said disk, e shaft having' its ends oseillatably and rotatablymounted in the adjacent faces of said bearings, a. pinion splined uponthe last named shaft and shiftable `thereon vto engage vany ef theannuli of said. disk, pinion earried by the opposite end of the shaft, a`rear esrried by the driven shaft and with which said pinion is adaptedto mesh, means for shifting` the bearing of said driving shaft, andmeans for shifting' said pinion upon the last named shaft, saiddriving;and driven shafts beine; substantially parallel.

In testimony whereof l hereunto affix my signature. y i ,i f RAYNIOND E.BADSKY,

